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3(2x-2) < 2(2x+7)
6x-6 < 4x+14
6x-4x < 14+6
2x < 20
x < 10 ; x = bilangan cacah
x = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9 }
HP = { x | x < 10 ; x ∈ bil. cacah }